<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="js/vue.js"></script>
</head>
<body>
    <div id="app">
        <button v-on:[attr]="btnClick">按钮</button>
    </div>
    <script>
        var vm = new Vue({
            el: '#app',
            data: {
                attr:'click'
            },
            methods: {
                btnClick: function() {
                    alert('hello')
                }
            },
        })
    </script>
</body>
</html>